Lock.



No. 7ll,|l|. Patentadflct. I4, I902.

R. L. KIRK.

LOCK.

(Application filed. Apr. '7, 1992.) Qlo lodol.)

anon 1km:

w; mace:

atto'oweqa u: nonms PETERS cu, Puom-umo. WASHINGTON u c UNITED STATESPATENT OFFICE.

ROBERT L. KIRK, OF FORNE'Y, TEXAS.

LocfK.

SPECIFICATION forming part of Letters Patent No. 711,11 1, dated October14, 1902- Applieation filed April 7, 1902. Serial No. 101,742. (Nomodel.)

the following to be a full, clear, and exact' description of theinvention, such as willen-i able others skilled in the art to which itappertains to make and use the same.

This invention relates to looks in general,

and more particularly to that class of trunklocks in connection withwhich a hasp is employed, the object of the invention being to provide aspring-lock in which the insertion of the staple of the hasp willrelease the bolt to permit it to engage a staple.

A further object of the invention is to provide a construction whichwill prevent picking of the lock.

Other objects and advantages of the invention will be understood fromthe following description.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a section taken through the lock and a hasp engagedtherewith. Fig.

2 is a view of the lock proper with the front plate thereof removed andthe positions of the hasp-receiving hole and the keyhole indicated indotted lines. Fig. 3 is a detail perspective View showing the rotatingdisks through which the key is passed and which protect the lockmechanism from being picked. Fig. 4 is an elevation of the key employed.

Referring now to the drawings, the present lock comprises a casing 5,which is secured to the body of the trunk and through the front of whichcasing is formed the opening 6, which receives the staple 7 on the hasp8 in position for engagement by the lock-bolt.

The lock-bolt, as shown, consists of the metal block 9, which is pivotedwithin the casing and at one end of which is the laterally-projectingfinger 10, so located that when the block is moved pivotally said fingerwill be carried into and out of engagement with the staple of the hasp.The block is held normally and yieldably with the finger in engagingposition by means of the fiat has its extremity bent laterally, as shownat 13, to rest against the shoulder 14 or side edgeof the pivoted blockadjacent to the finger thereof, said plate limiting the pivotal movementof the block under the influence of its spring. When the pivoted blockis moved against the action of its spring, the laterally-turned end 13of the plate 12 snaps down in front of the outer end of the finger andacts as a stop to prevent movement of the block with the finger intoengaging position. In this position of the plate 12 it is in thepath ofmovement of the staple of the hasp into the casing, so that when thetrunk is to be. locked the staple is passed through the opening 6 andagainst the plate 12, which latter is pressed rearwardly from engagementwith the free end of the finger of the pivoted block, and said block ispermitted to move and carry the finger through thestaple to preventwithdrawal of the staple.

To withdraw the finger from engagement with the staple, a key isemployed. A keyhole 15 is formed through the front of the casing 5, andin this keyhole, which is cylin- 'drical, are mounted the two disks 16and 17, which are adapted for rotation therein and are connected by theweb 18. The disks have radial slots 19 and 20, which lie at an angle toeach other and through which the key is passed to move the bolt. A keysuch as shown in Fig. 4:15 employed, and this key is passed firstthrough the slot of the outer disk and inwardly until it strikes theinner disk, after which it is rotated until it registers with the slotof the inner disk, through which it is passed into operative relation tothe pivoted block of the bolt. The key is then rotated, when it engagesthe pivoted block and moves the latter to retract the finger of the boltfrom the staple and to move the bolt' until the end of the finger haspassed beyond the laterallyturned end 13 of the plate 12, when the platesprings into position in front of the finger 12 and holds the boltretracted.

It will be understood that in practice modifications of the specificconstructions shown may be made, and any suitable materials andproportions may be used for the various parts without departing from thespirit of the invention.

What is claimed is- 1. A lock mechanism comprising a casing having anopening therein adapted to receive the staple of a hasp, a block pivotedin the casing and havinga finger adapted to engage the staple of a hasp,said block being adapted for movement to carry the finger transverselyof the opening and having a shoulder at the base of the finger, aspring-plate fixed in the casing and having its free end bent laterallyfor engagement with the free end of the finger to hold it retracted orwith the shoulder, and a spring constructed and arranged to hold theblock yieldably with its shoulder against the spring-plate.

2. A look comprising a casing having an opening adapted to receive thestaple of a hasp, a movable bolt in the casing adapted for engagementwith the staple when passed through the opening, said'casing having asecond opening therein, and disks rotatably mounted in the secondopening, said disks being mutually connected and having radial slots outof alinement and adapted to receive a key and hold it in operativerelation to the bolt.

In testimony whereof I affix. my signature in presence of two Witnesses.

' ROBERT L. KIRK.

Witnesses:

J. W. LEE, H. W. LAWRENCE.

